• 执行过程创建新的函数

    The new table functions are created after the procedure executes. To list the output columns for the table functions, execute the following statements

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  • 创建返回多个函数困难

    Creating a table function that returns multiple values isn't much more difficult.

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  • 报告相对基线数据的差值的包装器函数

    Wrapper table functions that report deltas relative to the baseline data.

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  • 如果这样做脚本无法定义差值函数使用的CGTT。

    If you do not, the script will be unable to define the CGTTs used by the delta table functions.

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  • 清单3显示了用于发现连接DB2用户数函数

    The table function to find the number of users connected to DB2 is shown in Listing 3.

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  • 例如所有涉及订购步骤封装一个sql函数中。

    For example, all the steps not involving the order lines have been unified into one SQL table function.

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  • 函数可以返回单一(对于标量函数)多个(对于函数)。

    The functions can be coded to return a single value (for scalar functions) or multiple values (for table functions).

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  • sql函数使用使可以过程性逻辑放入查询from子句中。

    The usage of SQL Table Functions allows you to push procedural logic into the FROM clause of a query.

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  • 其他内建函数一样,函数可以SQLselect语句中使用

    Just like any other built-in function, table functions can be used in a SQL SELECT statement.

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  • 这个包装器函数输入底层监控函数相同所以能够筛选返回数据

    The wrapper function takes as input the same values passed as input to the underlying monitoring table function, so it has the same capability to filter the data that is returned.

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  • 系统提供三个函数可以所有被监视4种对象类型返回与健康有关信息

    The three provided table functions can return health-related information for all four monitored object types. These functions are grouped into the following categories.

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  • 9中,可以看到通过使用视图代替前一中的函数调用相同类型信息

    In figure 9 you can see that I'm calling the same kind of information by using a view instead of a table function in the previous figure.

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  • 前面事务一样,这里的大部分逻辑封装一个名为PAY_C_LAST的函数中。

    AS in the previous transactions, most of the logic is encapsulated into a table function named PAY_C_LAST .

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  • TBSCAN(18)这个SQL函数中的RETURN语句

    TBSCAN(18) represents the RETURN statement in the SQL Table function.

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  • GENROW函数会生成IN 谓词 <VALUELIST> 中所列

    The GENROW table function produces the values listed in the <VALUE LIST> of the IN predicate.

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  • 注意上面示例中,使用函数提取感兴趣数据搜索快照输出中的数据简单得

    Notice in the above example how much simpler it is to extract just the data for the table of interest using the table function rather than having to search for the data in the snapshot output.

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  • 不能检查样式函数可用性但是可以检查处理程序中内置的厂商编写扩展函数

    Can't check the availability of stylesheet functions, but you can check for vendor-written extension functions built into the processor?

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  • 函数允许实际(不是实际上的)中的数据有效地使用关系操作SQL

    Table functions enable you to efficiently use relational operations and the power of SQL on data that is not in an actual table.

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  • 这个子句允许sql函数包含UPDATEDELETEINSERTmerge语句

    This clause allows an SQL Table function to contain UPDATE, DELETE, INSERT and MERGE statements.

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  • 就像NEW_ORDER事务中一样,所有步骤收集一个sql函数中,节省代码路径

    As in the NEW_ORDER transaction, all steps have been collected into one SQL table function to save code path.

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  • XMLTABLEsql函数,它一个XML文档执行XQuery达式返回

    XMLTABLE is a SQL table function that returns a table from the evaluation of XQuery expressions on an XML document.

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  • 清单9所示查询访问计划要注意employee函数GENROW间的一个连接

    In the query access plan shown in Listing 9, notice a join between the table EMPLOYEE and a table function, GENROW.

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  • 使用为基线数据每会话存储创建全局临时CGTT)(对于每个表函数,使用一个 CGTT)。

    Use a created global temporary table (CGTT) for per-session storage of the baseline data (use one CGTT per table function).

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  • 如果发现扩展函数样式表函数更好可以定义样式表函数作为扩展函数不能使用第二选择

    If you find that an extension function can do a better job than a stylesheet function, then you can define the stylesheet function to be the second choice when the extension function is not available.

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  • 最后如果use - when属性之外使用可以检查是否支持用户定义的样式函数

    Finally, if used outside of the use-when attribute, it can also detect if a user-defined stylesheet function is supported.

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  • 如果连接分区希望检索一分区有效设置必须调用函数之前首先连接这个分区。

    If you are connected to one partition and wish to retrieve the effective Settings for another partition, you must first connect to the new partition before invoking the table function.

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  • 两个乘法函数定义非常相近清单3中的函数有用(通过清单3中的3次调用即可看出一点)。

    The definitions of the two times-table functions are remarkably close, but the new version is considerably more useful (as you can see from the three invocations in Listing 3).

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  • 通过关联(correlation),SQL函数允许以一种高效方式实现迭代,而不是使用游标。

    Through correlation, SQL table functions allow a more efficient way of implementing iterations, otherwise done with cursors.

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  • DB 2支持许多数据库服务器端编程语言包括存储过程触发器函数(函数标量函数)。

    DB2 supports many database server-side programming languages, including stored procedures, triggers, and functions (table and scalar).

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  • get_dbm_config函数记录的返回数据库管理器配置信息一个参数

    GET_DBM_CONFIG table function Returns database manager configuration information in a table with two rows and a column for each parameter.

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